CN203212246U - Connecting structure of telescopic oil cylinder and basic arm - Google Patents
Connecting structure of telescopic oil cylinder and basic arm Download PDFInfo
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- CN203212246U CN203212246U CN 201320129109 CN201320129109U CN203212246U CN 203212246 U CN203212246 U CN 203212246U CN 201320129109 CN201320129109 CN 201320129109 CN 201320129109 U CN201320129109 U CN 201320129109U CN 203212246 U CN203212246 U CN 203212246U
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- wall
- stepped shaft
- piston rod
- oil cylinder
- bearing
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Abstract
The utility model discloses a connecting structure of a telescopic oil cylinder and a basic arm. The connecting structure of the telescopic oil cylinder and the basic arm comprises a support seat arranged on the basic arm, a piston rod head of the telescopic oil cylinder and a shaft for connecting the support seat and the piston rod head. The connecting structure of the telescopic oil cylinder and the basic arm is characterized in that the shaft is a stepped shaft comprising a large end, a middle part and a small end; the cross section of the middle part of the stepped shaft is a quadrate; the cross section of the large end of the stepped shaft is an external connection circle of the quadrate; the cross section of the small end of the stepped shaft is an internally tangent circle of the quadrate; the support seat comprises an upper wall, a lower wall, a left wall, a right wall, a rear wall and a square chamber shape of a front opening; a large round hole adaptive to the cross section of the large end is formed on the right wall; a small round hole adaptive to the cross section of the small end is formed on the left wall; a through hole which is adaptive to the middle part of the stepped shaft and is provided with a rectangular cross section is formed on the piston rod head; the piston rod head is inserted into the support seat; the small end of the stepped shaft passes through a rectangular shaft hole in the piston rod head through the large round hole in the right wall of the support seat, and is matched with the small round hole in the left wall of the support seat.
Description
Technical field
The utility model relates to a kind of mechanical connecting structure, particularly a kind of basic arm connection structure of telescopic oil cylinder and the arm for hoisting crane.
Background technology
Be the car hosit of hydraulic telescopic type for more piece box arm, more piece arm flexible be by telescopic oil cylinder stretch realize.In the more piece arm, direct coupled with turntable is basic arm, and other each joints are telescopic boom.Concrete structure is, the piston rod of telescopic oil cylinder links to each other with basic arm, and cylinder barrel links to each other by the insert-pull pin mechanism under controlling successively with each joint telescopic boom; When cylinder barrel stretches out, promote to stretch out simultaneously with this joint telescopic boom of cylinder barrel pinning, during the cylinder barrel withdrawal, this joint telescopic boom is withdrawn simultaneously.Traditional telescopic oil cylinder piston rod is connected with basic arm, adopts the connection pattern of circular axis, about connect the basic arm bottom.The shortcoming that this kind connects pattern is: the gap of telescopic oil cylinder bar head bearing and basic arm shaft room is little, and generally about 2.5mm, assembling is difficult; When telescopic oil cylinder all stretched out, telescopic oil cylinder may be out of shape along with the distortion of arm, thereby made the cylinder barrel of telescopic oil cylinder and piston rod can not keep in-line, had increased the possibility that oil cylinder damages.
Summary of the invention
The purpose of this utility model is for overcoming defective of the prior art, and a kind of simple in structure, easy for installation, connection structure that stress performance improves is provided.
The purpose of this utility model realizes with following technical proposals:
The connection structure of a kind of telescopic oil cylinder and basic arm, comprise the bearing that is located on the basic arm, the piston rod head of telescopic oil cylinder and the axle that connects bearing and piston rod head, it is characterized in that, described axle is the stepped shaft that comprises big end, centre portion and small end, the centre portion cross section of described stepped shaft is square, the cross section of the big end of described stepped shaft is described foursquare external circle, and the cross section of the small end of described stepped shaft is described foursquare inscribe circle; Described bearing is the square chamber shape that comprises upper wall, lower wall, Zuo Bi, You Bi, rear wall and prosopyle, has the big hole adaptive with big end section on the described right wall, has the small sircle hole adaptive with described little end section on the described left wall; Having with the suitable cross section of described stepped shaft centre portion on the described piston rod head is rectangular through-hole; Described piston rod head inserts in the bearing, and the small end of described stepped shaft passes the rectangular through-hole on the described piston rod head by the big hole on the right wall of described bearing, is coupled in the small sircle hole on the wall of a described bearing left side.
Purpose of the present invention can also realize by the technical scheme of following optimization:
The connection structure of a kind of telescopic oil cylinder and basic arm, comprise the bearing that is located on the basic arm, the piston rod head of telescopic oil cylinder and the axle that connects bearing and piston rod head, it is characterized in that, described axle is the stepped shaft that comprises big end, centre portion and small end, the centre portion cross section of described stepped shaft is square, the cross section of the big end of described stepped shaft is described foursquare external circle, and the cross section of the small end of described stepped shaft is described foursquare inscribe circle; Described bearing is the square chamber shape that comprises upper wall, lower wall, Zuo Bi, You Bi, rear wall and prosopyle, has the big hole adaptive with big end section on the described right wall, has the small sircle hole adaptive with described little end section on the described left wall; Having with the suitable cross section of described stepped shaft centre portion on the described piston rod head is rectangular through-hole; Described piston rod head inserts in the bearing, and the small end of described stepped shaft passes the rectangular through-hole on the described piston rod head by the big hole on the right wall of described bearing, is coupled in the small sircle hole on the wall of a described bearing left side; Optimize part and be, respectively be provided with perpendicular gap under the rectangular through-hole of piston rod head and stepped shaft in the vertical direction, described perpendicular gap is 20mm; Respectively be provided with lateral clearance between the Zuo Bi of described piston rod head and described bearing and the opposite face of right wall, described lateral clearance is 10mm.
The connection structure of a kind of telescopic oil cylinder and basic arm, comprise the bearing that is located on the basic arm, the piston rod head of telescopic oil cylinder and the axle that connects bearing and piston rod head, it is characterized in that, described axle is the stepped shaft that comprises big end, centre portion and small end, the centre portion cross section of described stepped shaft is square, the cross section of the big end of described stepped shaft is described foursquare external circle, and the cross section of the small end of described stepped shaft is described foursquare inscribe circle; Described bearing is the square chamber shape that comprises upper wall, lower wall, Zuo Bi, You Bi, rear wall and prosopyle, has the big hole adaptive with big end section on the described right wall, has the small sircle hole adaptive with described little end section on the described left wall; Having with the suitable cross section of described stepped shaft centre portion on the described piston rod head is rectangular through-hole; Described piston rod head inserts in the bearing, and the small end of described stepped shaft passes the rectangular through-hole on the described piston rod head by the big hole on the right wall of described bearing, is coupled in the small sircle hole on the wall of a described bearing left side; Respectively be provided with perpendicular gap under the rectangular through-hole of piston rod head and stepped shaft in the vertical direction, described perpendicular gap is 20mm; Respectively be provided with lateral clearance between the Zuo Bi of described piston rod head and described bearing and the opposite face of right wall, described lateral clearance is 10mm.Optimize part and be, also comprise a detouchable gear shaft plate that is arranged on the bearing, the big end of stepped shaft is fixed on the bearing, prevent moving axially of stepped shaft; Can also in the gear shaft plate embedded groove, prevent the rotation of stepped shaft at big end and the described gear shaft plate contact position fluting of described stepped shaft.
The connection structure of a kind of telescopic oil cylinder and basic arm, comprise the bearing that is located on the basic arm, the piston rod head of telescopic oil cylinder and the axle that connects bearing and piston rod head, it is characterized in that, described axle is the stepped shaft that comprises big end, centre portion and small end, the centre portion cross section of described stepped shaft is square, the cross section of the big end of described stepped shaft is described foursquare external circle, and the cross section of the small end of described stepped shaft is described foursquare inscribe circle; Described bearing is the square chamber shape that comprises upper wall, lower wall, Zuo Bi, You Bi, rear wall and prosopyle, has the big hole adaptive with big end section on the described right wall, has the small sircle hole adaptive with described little end section on the described left wall; Having with the suitable cross section of described stepped shaft centre portion on the described piston rod head is rectangular through-hole; Described piston rod head inserts in the bearing, and the small end of described stepped shaft passes the rectangular through-hole on the described piston rod head by the big hole on the right wall of described bearing, is coupled in the small sircle hole on the wall of a described bearing left side; Respectively be provided with perpendicular gap under the rectangular through-hole of piston rod head and stepped shaft in the vertical direction, described perpendicular gap is 20mm; Respectively be provided with lateral clearance between the Zuo Bi of described piston rod head and described bearing and the opposite face of right wall, described lateral clearance is 10mm.Also comprise a detouchable gear shaft plate that is arranged on the bearing, the big end of stepped shaft is fixed on the bearing, prevent moving axially and rotating of axle.Optimizing part is, on upper wall, lower wall and the rear wall of described bearing, respectively be provided with a dowel bolt, on the Zuo Bi of described bearing, right wall, respectively be provided with two and adjust bolt, oil cylinder when assembling with about, left and right sides, and totally 7 bolts adjustment location, rear, after the oil cylinder assembling is adjusted and is finished, keep the bolt of upper and lower, take away and unclamp all the other bolts.
Description of drawings
The telescopic oil cylinder of the prior art that Fig. 1 relates to for the utility model and the scheme drawing of basic arm connection structure
Fig. 2 is front view of the present utility model
Fig. 3 is birds-eye view of the present utility model
Fig. 4 is the front view of the bearing in the utility model
Fig. 5 is the front view of the piston rod head in the utility model
Fig. 6 is the top plan view of the piston rod head in the utility model
Fig. 7 is the front view of the stepped shaft in the utility model
Fig. 8 is the left view of the stepped shaft in the utility model
Among the figure, 1-bearing, 11-upper wall, 12-lower wall, 13-left side wall, 131-small sircle hole, the right wall of 14-, 141-big hole, the 15-rear wall, 16-prosopyle, 2-piston rod head, 21-rectangular through-hole, the 3-axle, 4-stepped shaft, the big end of 41-, 42-centre portion, the 43-small end, 5-erects the gap, the 6-lateral clearance, 7-gear shaft plate, the 8-dowel bolt, 9-adjusts bolt.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
As Fig. 1, the connection structure of a kind of telescopic oil cylinder and basic arm, comprise the bearing 1 that is located on the basic arm, the piston rod head 2 of telescopic oil cylinder and the axle 3 that connects bearing 1 and piston rod head 2, it is characterized in that, described axle 3 is the stepped shaft 4 that comprises big end 41, centre portion 42 and small end 43, centre portion 42 cross sections of described stepped shaft 4 are square, the cross section of the big end 41 of described stepped shaft 4 is described foursquare external circle, and the cross section of the small end 43 of described stepped shaft 4 is described foursquare inscribe circle; Described bearing 1 is the square chamber shape that comprises upper wall 11, lower wall 12, left wall 13, right wall 14, rear wall 15 and prosopyle 16, have the big hole 141 adaptive with big end 41 cross sections on the described right wall 14, have the small sircle hole 131 adaptive with described little end section on the described left wall 13; Have the rectangular through-hole 21 suitable with described stepped shaft 4 centre portions 42 on the described piston rod head 2; Described piston rod head 2 inserts the described bearing 1 from described prosopyle 16, the small end 43 of described stepped shaft 4 is by the big hole 141 on the described bearing 1 right wall 14, pass the rectangular through-hole 21 on the described piston rod head 2, be coupled in the small sircle hole 131 on the described bearing 1 left wall 13; Respectively be provided with perpendicular gap 5 under centre portion 42 in the vertical directions of the rectangular through-hole 21 of described piston rod head 2 and described stepped shaft 4, described perpendicular gap 5 is 20mm; Respectively be provided with lateral clearance 6 between the left wall 13 of described piston rod head 2 and described bearing 1 and the opposite face of right wall 14, described lateral clearance 6 is 10mm; Also comprise a detouchable gear shaft plate 7 that is arranged on the described bearing 1, big end 41 and described gear shaft plate 7 contact positions of described stepped shaft 4 are had groove, be fixed on the bearing 1 in gear shaft plate 7 embedded grooves, prevent moving axially and rotating of stepped shaft 4; Optimizing part is, on upper wall 11, lower wall 12 and the rear wall 15 of described bearing 1, respectively be provided with a dowel bolt 8, on the left wall 13 of described bearing 1, right wall 14, respectively be provided with two and adjust bolts 9, oil cylinder when assembling with about, left and right sides, and the rear totally 7 adjust dowel bolt adjustment location, after the oil cylinder assembling is adjusted and is finished, the adjustment bolt that keeps upper and lower is taken all the other away and is adjusted dowel bolt.
The connection structure of telescopic oil cylinder of the present utility model and basic arm, when the perpendicular gap that arranges and lateral clearance teeter occurs in the arm working process, allow the piston rod head of telescopic oil cylinder to endwisely slip at stepped shaft, make cylinder barrel and the piston rod of telescopic oil cylinder keep in-line, avoided the possibility of damaging because of the distortion oil cylinder; Rectangle stepped shaft and rectangular through-hole are convenient to install and the location, and the setting of adjustment dowel bolt has further facilitated installation, has solved the technical matters that the utility model proposes well.
Claims (7)
1. the connection structure of a telescopic oil cylinder and basic arm, comprise the bearing that is located on the basic arm, the piston rod head of telescopic oil cylinder and the axle that connects bearing and piston rod head, it is characterized in that, described axle is the stepped shaft that comprises big end, centre portion and small end, the centre portion cross section of described stepped shaft is square, the cross section of the big end of described stepped shaft is described foursquare external circle, and the cross section of the small end of described stepped shaft is described foursquare inscribe circle; Described bearing is the square chamber shape that comprises upper wall, lower wall, Zuo Bi, You Bi, rear wall and prosopyle, has the big hole adaptive with described big end section on the described right wall, has the small sircle hole adaptive with described little end section on the described left wall; Having with the suitable cross section of described stepped shaft centre portion on the described piston rod head is rectangular through-hole; Described piston rod head inserts in the bearing, and the small end of described stepped shaft passes the rectangular through-hole on the described piston rod head by the big hole on the right wall of described bearing, is coupled in the small sircle hole on the wall of a described bearing left side.
2. the connection structure of a kind of telescopic oil cylinder as claimed in claim 1 and basic arm is characterized in that, respectively is provided with perpendicular gap under the rectangular through-hole of piston rod head and stepped shaft in the vertical direction, and described perpendicular gap is 20mm; Respectively be provided with lateral clearance between the Zuo Bi of described piston rod head and described bearing and the opposite face of right wall, described lateral clearance is 10mm.
3. the connection structure of a kind of telescopic oil cylinder as claimed in claim 1 or 2 and basic arm is characterized in that, also comprises a detouchable gear shaft plate that is arranged on the described bearing, and the big end of described stepped shaft is fixed on the described bearing.
4. the connection structure of a kind of telescopic oil cylinder as claimed in claim 3 and basic arm is characterized in that, has groove in big end and the described gear shaft plate contact position of described stepped shaft, in the gear shaft plate embedded groove.
5. the connection structure of a kind of telescopic oil cylinder as claimed in claim 1 or 2 and basic arm is characterized in that, respectively is provided with a dowel bolt on upper wall, lower wall and the rear wall of described bearing, respectively is provided with two and adjusts bolt on the Zuo Bi of described bearing, right wall.
6. the connection structure of a kind of telescopic oil cylinder as claimed in claim 3 and basic arm is characterized in that, respectively is provided with a dowel bolt on upper wall, lower wall and the rear wall of described bearing, respectively is provided with two and adjusts bolt on the Zuo Bi of described bearing, right wall.
7. the connection structure of a kind of telescopic oil cylinder as claimed in claim 4 and basic arm is characterized in that, respectively is provided with a dowel bolt on upper wall, lower wall and the rear wall of described bearing, respectively is provided with two and adjusts bolt on the Zuo Bi of described bearing, right wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320129109 CN203212246U (en) | 2013-03-21 | 2013-03-21 | Connecting structure of telescopic oil cylinder and basic arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320129109 CN203212246U (en) | 2013-03-21 | 2013-03-21 | Connecting structure of telescopic oil cylinder and basic arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203212246U true CN203212246U (en) | 2013-09-25 |
Family
ID=49201798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320129109 Expired - Fee Related CN203212246U (en) | 2013-03-21 | 2013-03-21 | Connecting structure of telescopic oil cylinder and basic arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203212246U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663194A (en) * | 2013-12-11 | 2014-03-26 | 中联重科股份有限公司 | Telescopic boom and engineering machine |
| CN107107289A (en) * | 2014-11-12 | 2017-08-29 | 维贾伊·库马尔·玛达 | Novel rigid matrix retention system with radial and axial compensation |
-
2013
- 2013-03-21 CN CN 201320129109 patent/CN203212246U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663194A (en) * | 2013-12-11 | 2014-03-26 | 中联重科股份有限公司 | Telescopic boom and engineering machine |
| CN103663194B (en) * | 2013-12-11 | 2016-01-20 | 中联重科股份有限公司 | Telescopic boom and construction machinery and equipment |
| CN107107289A (en) * | 2014-11-12 | 2017-08-29 | 维贾伊·库马尔·玛达 | Novel rigid matrix retention system with radial and axial compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20150321 |
|
| EXPY | Termination of patent right or utility model |